Knockdown paper drum



(No ModeH W B HOWB KNOGKDOWN PAPER DRUM.

Patented June 29,

Nirnn STATES VARREN B. HOVVE, OF CHICAGO, ILLINOIS.

KNOCKDOWN PAPER DRUIVl.

SPECIFICATION forming part of Letters APatent No. 585,386, dated June 29, 189'?.

Application filed August 31, 1896- Serial No. 604,41lr (No model.) A

To all whom, t may concern:

Be it known that I, VARREN B. HOWE, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Knockdown Paper Drums; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification,

This invention relates to improvements in cylindric or drum-shaped paper or strawboard cartons of that variety which are commonly known as knockdown boxes, because made in such manner as to be capable of being folded flat for storage and transportation.

The invention consists in the matters hereinafter set forth, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a perspective view of a complete drum or cylindric carton constructed in accordance with inyinvention. Fig. 2 is a top plan view thereof. Fig. 3 is a transverse section thereof, taken through the longitudinal axis of the drum. Fig. t shows in perspective the outer cylindric wall of the drum. Fig. 5 is a perspective view of the inner cylindric wall of the drum. Figs. 6 and 7 are similar Views A of one of the end walls or heads of the drum and of a circumferential strip for holding said head in place. Fig. 8 is an end View of the outer cylindric wall when collapsed.

In said drawings, A designates fan outer cylindric wall made from a rectangular sheet of paper or strawboard by bringing the ends of the sheet together and securing them by paste or otherwise iny an overlapping joint a. Longitudinal scores d d', located at diametrically opposite points on the cylindric sheet A, enable it to be collapsed by the flattening and bringing together of the two equal sections into which the sheet is divided by said scores.

B designates an inner cylindric wall also made of a rectangular sheet of paper or strawboard, preferably of a somewhat heavier quality than that employed for the outer wall A. Said inner wall B is made somewhat shorter in the direction of the longitudinal axis of the cylinder than the outer wall and provided with abutting or interlocking parts or surfaces so arranged that when the ends are engaged with each other the inner wall will be held in its distended form and closelyin contact with the outer wall, within which it fits. I have shown in the drawings as a means of interlocking the adjacent ends a tongue b and slit Z2', arranged to interlock in the manner illustrated. The sheet B is made of such length and the slit bis so arranged that when the sheet is bent into cylindric shape and secured by the interlocking of the tongue b and the slit bsaid sheet will fit tightlywithin the outer cylindric wall A. The tongue and slit are located at the middle of the end of the wall, this construction enabling the inner wall to be conveniently inserted within said outer wall by being first twisted into a slightly-conical shape and then forced into the same small end foremost. The central location and character of the connection between the tongueb and the slit b'will obviously permit such inanipulation of the cylinder, and as the latter enters fartherand farther into the said outer wall it will gradually resume its cylindric shape and fit closelywithin the latter throughout its entire length.

The circumferential or end edges h2 of the inner cylindric wall form ledges or shoulders to support the heads C of the drum. Said heads are made of circular form from heavy paper or strawboard and are cut out of a diameter equal to the interior diameter ofthe outer cylindric wall A. They are inserted in the ends of said outer cylinder and rest against the ledges formed by the ends of the inner cylindric wall B, as hereinbefore stated. After being thus inserted the heads C are secured in place by annular strips D of strawboard, which are made of a width just sufficient to bring their outer edges just flush with the ends of the outer wall A of the drum when the strips are placed in the ends of the latter against the heads C. Said strips are not designed to be ordinarily fastened in place before filling the cartonotherwise than by the friction of their engagement with the cylinder A and are not secured together at their extremities, which merely abut against each other. When the carton is finished and is in use, it will be covered by a wrapping or covering F of paper, which will be applied after the carton is supplied with the desired contents. The paper Wrapping thus provided will obviously serve to hold the strips E in place and thus hold the heads C securely in the drum. This construction is illustrated in Figs. l and 2 and in the sectional view, Fig. 3, wherein is shown a paper wrapping or'covering F, applied to the exterior of the drum and having its ends or marginal parts IO fbent over the strip D, the wrapping being ger of breaking the sheet.

preferably secured by adhesive material to the exterior of the drum. To permit access to the contents of the drum Without removing its heads, one of the latter is herein shown as provided centrally with a slit d of U shape, which serves to divide off an interior flap d', that it may be lifted or bent upward like a lid to admit the hand. A string or loop d2, secured to the free end of said iiap and extending out through the slit d, enables the iiap d to be readily lifted when desired.

A cylindric or drum-shaped carton of the construction thus described will obviously be of relatively great strength and rigidity, since the heads C C will strongly resist any pressure tending to crush the drum laterally, while the ends of the inner wall B will support said heads against endwise pressure. Furthermore, as the inner wall B is never required to be creased or folded it may conveniently be made of very heavy strawboard and will in itself strongly resist any crushing strains.

The outer wall A is supported against inward pressure by the inner wall B and in turn sustains all outward or bursting strains or pressure and prevents the inner wall from being burst open or pulled apart at its meeting edges. Being made practically continuous or Without open or detachable joints, the outer wall may therefore be conveniently made of comparatively thin material and may be folded along the score-lines a Without dan- The inner walls B are scored and shipped in their original condition and are simply bent into cylindric shape and secured by the interlocking of the flaps b and slits b when it is desired to assemble the boxes. The heads C are obviously always in the most convenient shape for storage and shipping, as are also the `strips D, which are packed in their unbent form. The materials constituting the several parts of the carton may thus be made up for shipment in solid packages of the most convenient form, and the drums may afterward be assembled by unskilled labor Without other manipulation than the mere putting of the already-prepared parts together.

The drum made as described is not only desirable by reason of its strength and durability, but also for its ornamental appearance. Moreover, such drums may be used as toy drums Whenever their contents are exhausted.

I claim as my invention- 1. A cylindric carton or drinn embracing a continuous tubular outer wall of flexible material, adapted to be folded flat, a separate non-continuouswall of less width than the outer wall, the ends of which are adapted to engage each other to hold said inner wall distended said inner wall being made of relatively stiff material without creases or folds, and heads inserted in the ends of the outer wall and resting against the end edges of the inner wall, substantially as described.

2. A cylindric carton or drum embracing an outer cylindric wall of flexible material, a separate inner cylindric wall of less Width than the outer wall made of relatively stiff material Without creases or folds, heads inserted in theends of the outer wall and resting against the end edges of the inner wall, and means for holding said head in place consisting of loose strips bent into cylindric shape and inserted in the ends of the outer wall against the heads, substantially as described. Y

3. A cylindric drum or carton. embracing a continuous outer cylindrie wall of flexible material, a non-continuous inner cylindric Wall made of relatively stiff material without creases or folds and having detachably-connected meeting edges, heads inserted in the ends of the outer wall and strips bent into cylindric form and inserted in the ends of the outer Wall against the heads for securing the latter in place, substantially as described.

4. A cylindric drum or carton embracing a continuous outer cylindric wall of flexible material, a non-continuous inner cylindric wall made of relatively stiff material, without creases or folds and having on its meeting edges centrally located, detachable fastening devices, heads inserted in the ends of the outer wall and strips bent into cylindric form and inserted in the ends of the outer wall against the heads for securing the latter in place, substantially as described.

5. A cylindric druln or carton embracing a continuous outer cylindric wall of iiexible material, a non-continuous inner cylindric Wall made of relatively stiff material Without creases or folds and having on its meeting edges an interlocking tongue and slit, heads inserted in the ends of the outer wall and strips bent into cylindric form and inserted in the ends of the outer wall against the heads for securing the latter in place, substantially as described.

G. A cylindric drum or carton embracing a continuous outer cylindric wall of flexible material provided with diametrically oppo` site longitudinal scores, a non-continuous inner cylindric wall made of relatively stiff material Without creases or folds, and having detachably connected meeting edges, heads inserted in the ends of the outer Wall and strips bent into cylindric form and inserted in the ends of the outer Wall against the heads for securing the latter in place, substantially as described.

7. A cylindric carton or drum embracing IOO IIO

1o per Wrapping or covering applied to the eX- terior of the drum and engaging said strips to hold the saine in place.

In testimony that I claim the foregoing as my invention I affix my signature, in presence of two Witnesses, this 21st day of August, 15

WARREN B. I-IOWE.

Vitnesses: A

C. CLARENCE POOLE, WILLIAM L. HALL. 

